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January 28th, 2026 :: 6:54 am CST   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated January 28th at 5:54 am 
Temperature:3°F Dew Point:-2°F
Barometer:30.33 inHg Wind:N 11 Mph
Humidity:71.0% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jan 28th
Thursday
Jan 29th
Friday
Jan 30th
Saturday
Jan 31st
Sunday
Feb 1st
Mix of Cloud and Sun Cloudy Cloudy Cloudy Mostly Sunny
19°F
17°F
3°F
16°F
2°F
19°F
4°F
24°F
7°F
 
 Decatur Detailed Weather Forecast  
 
Wednesday, January 28th, 2026
Morning Temperature: 13°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 9°F
Sunny.
Evening Temperature: 2°F
A mix of cloudy and clear skies.
Thursday, January 29th, 2026
Overnight Temperature: 5°F
Cloudy.
Morning Temperature: 14°F
Cloudy.
Afternoon Temperature: 15°F
Cloudy.
Evening Temperature: 13°F
Cloudy.
Friday, January 30th, 2026
Overnight Temperature: 6°F
A mix of cloudy and clear skies.
Morning Temperature: 12°F
Cloudy. Windy at times.
Afternoon Temperature: 12°F
Cloudy.
Evening Temperature: 11°F
Cloudy with a chance of flurries. Windy at times.
Saturday, January 31st, 2026
Overnight Temperature: 5°F
Clear with cloudy periods. Windy at times.
Morning Temperature: 13°F
Cloudy. Windy at times.
Afternoon Temperature: 18°F
Cloudy with sunny periods. Windy at times.
Evening Temperature: 15°F
A mix of cloudy and clear skies with a slight chance of flurries. Windy at times.
Sunday, February 1st, 2026
Overnight Temperature: 9°F
Clear with cloudy periods.
Morning Temperature: 19°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 12°F
Sunny.
Evening Temperature: 8°F
Clear.
Monday, February 2nd, 2026
Overnight Temperature: 7°F
Clear with cloudy periods.
Morning Temperature: 23°F
Cloudy. Windy at times.
Afternoon Temperature: 24°F
Sunny.
Evening Temperature: 19°F
Clear.
Tuesday, February 3rd, 2026
Overnight Temperature: 14°F
A mix of cloudy and clear skies.
Morning Temperature: 28°F
Cloudy.
Afternoon Temperature: 28°F
Cloudy.
Evening Temperature: 30°F
Cloudy. Windy at times.
Wednesday, February 4th, 2026
Overnight Temperature: 34°F
Cloudy with flurries or showers likely. Risk of freezing rain. Windy at times.
Morning Temperature: 36°F
Cloudy with showers likely. Showers possibly mixed with wet flurries. Windy at times.
Afternoon Temperature: 36°F
Cloudy with flurries or showers likely. Risk of freezing rain.
Evening Temperature: 32°F
Cloudy with a chance of flurries or showers. Windy at times.
Thursday, February 5th, 2026
Overnight Temperature: 28°F
Cloudy. Windy at times.
Morning Temperature: 29°F
Cloudy. Windy at times.
Afternoon Temperature: 28°F
Sunny.
Evening Temperature: 28°F
Clear. Windy at times.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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